21. juliana excels at her track and field event: sprinting. she runs for short distances at very fast paces. her coach makes her
days a week just to give her body less stressful run days. but juliana finds this type of running very difficult. she has to keep stopping and catching her breath.
which type of muscle fiber is most likely stronger in her body?
a high-impact
b fast-twitch
c slow-twitch
d low-impact